Recycling – with all of the environmental issues the world is facing as well as the upcoming Earth Day holiday – is a hot topic. However, while most people think of recycling in terms of paper, plastic and aluminum, there is another type of recycling that is becoming a growing trend across America: re-purposing travel destinations.

Imagine eating in a restaurant that was once a church, immersing you in an atmosphere of stained glass windows, an alter and Biblical murals. Or, what about sleeping in a hotel that not only housed foreign diplomats after Pearl Harbor and served as an Army Hospital for wounded soldiers, but also held a classified secret government bunker used by Congress? Instead of getting rid of history, these types of places are refurbishing them and allowing travelers to experience them in a new way.

To help celebrate Earth Day, we’ve put together a list of recycled travel sites from around the United States. For a visual idea of these unique places, check out the gallery below.